Now using mac address as an identifier in vanity section

bin/libbfa.sh

@@ -183,15 +183,19 @@ function    nodedir
     #
     test -r "${BFANODEDIR}/netport"         ||
         echo $(( $RANDOM / 2 + 12345 )) > ${BFANODEDIR}/netport
-    netport=$(     cat ${BFANODEDIR}/netport )
+    netport=$(      cat ${BFANODEDIR}/netport )
     test $? = 0
     test -r "${BFANODEDIR}/rpcport"         ||
         echo $(( $RANDOM / 2 + 12345 )) > ${BFANODEDIR}/rpcport
     rpcport=$(      cat ${BFANODEDIR}/rpcport )
     # something uniqueish
-    local iphash=$( ip addr show scope global | awk '/^ *inet /{print $2}' | sed 's,/.*,,' | sha256sum )
-    BFAEXTRADATA="${USER}@${HOSTNAME} ${iphash}"
-    BFAEXTRADATA="${BFAEXTRADATA:0:32}"
+    ## find default interface
+    local def_if=$( ( ip -4 route show ; ip -6 route show ) | expand | sed -ne '/^default /{s/  */ /g;s/^.* dev //;s/ .*//;p;q}' )
+    local mymac=$( ip link show ${def_if} | sed -ne '/link\|ether/{s/^.*link.ether //;s/ .*//;s/://g;p;q}' )
+
+    BFAEXTRADATA="${USER}@${HOSTNAME}"
+    BFAEXTRADATA="${BFAEXTRADATA}                   "
+    BFAEXTRADATA="${BFAEXTRADATA:0:19} ${mymac}"
 }
 
 function    account